12939552 has 72 divisors (see below), whose sum is σ = 37149840. Its totient is φ = 4272000.

The previous prime is 12939541. The next prime is 12939571. The reversal of 12939552 is 25593921.

It is a happy number.

12939552 is a `hidden beast` number, since 12 + 93 + 9 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51427 + ... + 51677.

It is an arithmetic number, because the mean of its divisors is an integer number (515970).

Almost surely, 2^12939552 is an apocalyptic number.

12939552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12939552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18574920).

12939552 is an abundant number, since it is smaller than the sum of its proper divisors (24210288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12939552 is a wasteful number, since it uses less digits than its factorization.

12939552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 435 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 12939552 is about 3597.1588788932. The cubic root of 12939552 is about 234.7684576191.

The spelling of 12939552 in words is "twelve million, nine hundred thirty-nine thousand, five hundred fifty-two".